1 /* getopt_long and getopt_long_only entry points for GNU getopt.
2 Copyright (C) 1987, 88, 89, 90, 91, 92, 1993
3 Free Software Foundation, Inc.
4
5 This program is free software; you can redistribute it and/or modify it
6 under the terms of the GNU General Public License as published by the
7 Free Software Foundation; either version 2, or (at your option) any
8 later version.
9
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
14
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
18
19 #ifdef HAVE_CONFIG_H
20 #include <config.h>
21 #endif
22
23 #include "getopt.h"
24
25 #ifndef __STDC__
26 /* This is a separate conditional since some stdc systems
27 reject `defined (const)'. */
28 #ifndef const
29 #define const
30 #endif
31 #endif
32
33 #include <stdio.h>
34
35 /* Comment out all this code if we are using the GNU C Library, and are not
36 actually compiling the library itself. This code is part of the GNU C
37 Library, but also included in many other GNU distributions. Compiling
38 and linking in this code is a waste when using the GNU C library
39 (especially if it is a shared library). Rather than having every GNU
40 program understand `configure --with-gnu-libc' and omit the object files,
41 it is simpler to just do this in the source for each such file. */
42
43 #if defined (_LIBC) || !defined (__GNU_LIBRARY__)
44
45
46 /* This needs to come after some library #include
47 to get __GNU_LIBRARY__ defined. */
48 #ifdef __GNU_LIBRARY__
49 #include <stdlib.h>
50 #else
51 char *getenv ();
52 #endif
53
54 #ifndef NULL
55 #define NULL 0
56 #endif
57
58 int
getopt_long(argc,argv,options,long_options,opt_index)59 getopt_long (argc, argv, options, long_options, opt_index)
60 int argc;
61 char *const *argv;
62 const char *options;
63 const struct option *long_options;
64 int *opt_index;
65 {
66 return _getopt_internal (argc, argv, options, long_options, opt_index, 0);
67 }
68
69 /* Like getopt_long, but '-' as well as '--' can indicate a long option.
70 If an option that starts with '-' (not '--') doesn't match a long option,
71 but does match a short option, it is parsed as a short option
72 instead. */
73
74 int
getopt_long_only(argc,argv,options,long_options,opt_index)75 getopt_long_only (argc, argv, options, long_options, opt_index)
76 int argc;
77 char *const *argv;
78 const char *options;
79 const struct option *long_options;
80 int *opt_index;
81 {
82 return _getopt_internal (argc, argv, options, long_options, opt_index, 1);
83 }
84
85
86 #endif /* _LIBC or not __GNU_LIBRARY__. */
87
88 #ifdef TEST
89
90 #include <stdio.h>
91
92 int
main(argc,argv)93 main (argc, argv)
94 int argc;
95 char **argv;
96 {
97 int c;
98 int digit_optind = 0;
99
100 while (1)
101 {
102 int this_option_optind = optind ? optind : 1;
103 int option_index = 0;
104 static struct option long_options[] =
105 {
106 {"add", 1, 0, 0},
107 {"append", 0, 0, 0},
108 {"delete", 1, 0, 0},
109 {"verbose", 0, 0, 0},
110 {"create", 0, 0, 0},
111 {"file", 1, 0, 0},
112 {0, 0, 0, 0}
113 };
114
115 c = getopt_long (argc, argv, "abc:d:0123456789",
116 long_options, &option_index);
117 if (c == EOF)
118 break;
119
120 switch (c)
121 {
122 case 0:
123 printf ("option %s", long_options[option_index].name);
124 if (optarg)
125 printf (" with arg %s", optarg);
126 printf ("\n");
127 break;
128
129 case '0':
130 case '1':
131 case '2':
132 case '3':
133 case '4':
134 case '5':
135 case '6':
136 case '7':
137 case '8':
138 case '9':
139 if (digit_optind != 0 && digit_optind != this_option_optind)
140 printf ("digits occur in two different argv-elements.\n");
141 digit_optind = this_option_optind;
142 printf ("option %c\n", c);
143 break;
144
145 case 'a':
146 printf ("option a\n");
147 break;
148
149 case 'b':
150 printf ("option b\n");
151 break;
152
153 case 'c':
154 printf ("option c with value `%s'\n", optarg);
155 break;
156
157 case 'd':
158 printf ("option d with value `%s'\n", optarg);
159 break;
160
161 case '?':
162 break;
163
164 default:
165 printf ("?? getopt returned character code 0%o ??\n", c);
166 }
167 }
168
169 if (optind < argc)
170 {
171 printf ("non-option ARGV-elements: ");
172 while (optind < argc)
173 printf ("%s ", argv[optind++]);
174 printf ("\n");
175 }
176
177 exit (0);
178 }
179
180 #endif /* TEST */
181